What do all atoms of an element have in common? What number can be different and allow the atom to still be the same element

Potassium fluoride (KF, a salt, has a molecular weight of 58.10 grams. How many grams would be needed to make 1.0 liter of 5.0 molar salt solution?

Which of the following statements is true? A. All of the sun's radiation is reflected back into space by the Earth's atmosphere. B. Air is a poor insulator because the molecules in gas are very far apart. C.

Each of the two days of the year when neither hemisphere is tilted toward or away from the sun is called a (n)

As salinity increases: density increases electrical conductivity decreases amount of salt (NaCl) increases all of the above

What are the three sub-types of convergent plate boundaries

Compare and contrast the compounds CH4 and PH3 in terms of covalent bonding, molecular geometry (shape), and intermolecular forces. Which substance would experience a stronger attraction between its molecules, and why?

How do consumers energy

Given that the molar mass of NaCl is 58.44 g/mol, what is the molarity of a solution that contains 87.75 g of NaCl in 500. mL of solution? moles of solute Use molarity - liters of solution

What are 3 ways to seperate metal particles and salt

Sarah heated some orange coloured crystals in a test tube. The crystals turned green and fizzed. After the fizzing stopped, the test tube was allowed to cool. A green powder was left in the tube.